Sacrifice Puzzle (Rated 1112): Win with Back Rank Mate — Mate in 3

This puzzle is a classic middlegame example of a back rank mate, where the enemy king’s escape squares are restricted by its own pawns and pieces. White’s heavy pieces coordinate to force a decisive tactical sequence, and the key idea is that material counting matters less than king safety. Even though the position looks roughly balanced, the exposed back rank creates a hidden mating net that turns a small initiative into a forced finish.